Study On New Fiber Reinforced Shape Memory Polymer Composites

Shape memory materials are defined by their capacity to recover a predetermined shape after significant mechanical deformation. The shape memory effect is typically initiated by a change in temperature and has been observed in metals, ceramics, and polymers. Shape-memory polymers have wide availability, a large range of mechanical and physical properties and received increasing attention from 1980s.This paper tries to find out a kind of polymer material that have better mechanics properties and lower price. It is based on PVC/MBS blending materials and adding some fibers for reinforcing the matrix. It studies on the performance of this material and analyzes effects of every additive by the character of shape-memory, mechanical test and other test. The following results are obtained:(1) When the PVC/MBS/PCL is 85/15/10, the material has the best shape memory properties, which the retention and recovery ratio is around 99%;(2) PCL and PVC reacted and a hydroxyl bond created. And as its low Tg, this do good for improving the shape memory properties at 60℃;(3) PCL and MBS do effect on mechanics properties which the elastic modules change from 2232.835Mpa to 1578.53Mpa and the tensile strength down from 45.68Mpa to 31.64Mpa;(4) Glass fiber reinforced materials still have shape memory properties, the retention ratio change from 99.76% to 95%, the recovery ratio change from 98.91% to 88.28%, tensile strength change from 31.64Mpa to 38.29Mpa and the elastic modules change from 1578.53Mpa to 2136.12Mpa;(5) PET fiber reinforced materials still have shape memory properties. When the fiber is 2mm no-treatment PET fiber the retention ratio change from 99.76% to 95.76%, the recovery ratio change from 98.91% to 93.83%, tensile strength change from 31.64Mpa to...